Apple's iPhone 17 Pro has been named the fastest-charging phone overall in a new CNET lab test covering 33 smartphones, with Samsung's Galaxy S26 Ultra taking the top spot for wired charging speed.

To determine the rankings, CNET's lab team ran each phone through a 30-minute wired charging test starting at 10% battery or less, using the phone's included cable and a wall charger rated at or above the device's maximum supported speed. Phones that support wireless charging went through a matching 30-minute wireless test using a Qi (7.5W), Qi2 (15W), or Qi2.2 (25W) charger matched to the phone's peak supported speed. CNET then averaged the wired and wireless results into an overall charging score.

The ‌iPhone 17 Pro‌'s win in the overall category is partly a function of its relatively compact 4,252mAh battery, which is smaller than the 5,000mAh or larger capacities common among competing flagships. With less capacity to fill, the 17 Pro charges faster in absolute terms, and it supports both 40-watt wired charging and 25-watt Qi2.2 wireless charging. CNET notes that battery size is just one factor in overall battery life, alongside processor and software efficiency, and in its battery life testing, the ‌iPhone 17 Pro‌ Max came out on top for endurance.

For wired charging, Samsung's Galaxy S26 Ultra took the top spot, adding 76% charge in 30 minutes via its 60-watt wired charging speed, the fastest of any Samsung flagship to date. The ‌iPhone 17 Pro‌ came in second at 74%, tied with Motorola's Moto G Stylus (2025). The OnePlus 15 followed with 72%, while the iPhone 17, ‌iPhone 17 Pro‌ Max, and Samsung Galaxy S25 FE each reached 69%.

Apple's ‌iPhone 17 Pro‌ also claimed the fastest wireless charging result, gaining 55% in 30 minutes. The ‌iPhone 17 Pro‌ Max added 53%, followed by the ‌iPhone 17‌ at 49%, the iPhone Air at 47%, and the Galaxy S26 Ultra at 39%. CNET again attributes the 17 Pro's edge over the 17 Pro Max largely to its smaller battery, since both devices share the same A19 Pro chip and software.

Across all brands tested, Apple had the most consistent fast-charging performance by a considerable margin, averaging 54.6% across the four ‌iPhone 17‌ models and the ‌iPhone Air‌. Samsung's nine-phone average came in at 38.5%, with the Galaxy S26 Ultra as its strongest performer and the Galaxy Z Fold 7 as its weakest at 29%.

Silicon-carbon batteries, which use a silicon-based anode rather than graphite to enable higher capacities and faster charge rates, appeared among several of the top performers. The OnePlus 15, for example, recharged 72% of its 7,300mAh silicon-carbon battery in 30 minutes using a proprietary 80-watt charger. Silicon-carbon phones in the U.S. remain limited to OnePlus, RedMagic, and Poco. Apple, Samsung, and Google have not yet adopted the technology.